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Phone won't boot after update: red LED
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02-13-2021, 01:47 PM
I checked the wiki and it said for Ubuntu touch, hold the power button until the phone shuts down and then hold it again until the LED lights up. I did this but it just have me the red LED again.
I'm not sure what to do. My OS is on the EMMC and I don't have it backed up. I can't SSH into the phone either.
02-13-2021, 05:45 PM
(02-13-2021, 01:47 PM)3x5co Wrote: I checked the wiki and it said for Ubuntu touch, hold the power button until the phone shuts down and then hold it again until the LED lights up. I did this but it just have me the red LED again. Fairly regularly I have an instance (with both Mobian & Arch) that the phone gets stuck in u-boot and never launches the operating system. Which is usually solved by the 8 second power off and a retry. If however your eMMC "boot mechanism" is bust then you can burn an OS onto an SDcard, boot that and then try repair the SDcard. Or retrieve your files (copy /home/mobian/).
02-13-2021, 07:26 PM
It's weird, I flashed a new nightly image to an SD card, swapped it into my phone, and my normal installation booted — meaning that all my files and settings were correct. And it was faster than when I run on SD, so it was clearly running the EMMC version.
Then I tried booting with no SD, and got a green light but nothing else. When I put in my old SD, I get a red light and nothing else. Then I put the new SD in again, and this time it booted the OS on the SD, not on my EMMC. I'm not sure what that's about, but now I'm thinking maybe this is an fstab issue. If you have any other ideas, let me know, but in the meantime I'm going to try to edit my fstab from the live SD.
OK, there wasn't anything wrong with my fstab. I was able to chroot into my EMMC installation by following [these instructions](https://wiki.mobian-project.org/doku.php...leshooting). I updated all packages and checked journalctl and I couldn't see any problems.
I did see this in dmesg ``` anx7688 1-0028: boot firmware load failed (you may need to flash FW to anx7688 first) ``` I see [a thread](https://forum.pine64.org/showthread.php?...7#pid89367) about this firmware problem and it looks like it's saying I need to download an image and replace the firmware, but the post refers to postmarketOS. I'm not sure if there's anything else I can do. I can see that I have the 5.10 kernel, so maybe there's a way to roll that back. I can't find grub on my phone and so I'm guessing mobian uses something else. I saw this solution posted a lot: # echo 1 > /sys/class/typec/port0/device/flash_eeprom but I chrooted into the phone and /sys/ is empty.
02-14-2021, 06:52 AM
This morning, impossible to boot, the led is green and doesn't blink. In the context : https://forum.pine64.org/showthread.php?...3#pid89543, 02-12-2021, 10:47 PM . Two 'apt update && dist-upgrade && reboot' missing.
No effect with power button + volume button. The solution was to remove the battery.
02-14-2021, 09:22 PM
I tried to boot into recovery mode, using the volume up and power buttons. This didn't work and I still have the red LED.
What are my options from here? Should I repair the firmware? What are the instructions for Mobian? If not that, is there a way to reinstall the OS and preserve my home folder? If not, is it possible to make my entire external SD card the home folder? If I do this, I think it'll be a lot easier to reinstall my OS if this happens again, and still have all my settings.
02-16-2021, 11:42 AM
When I had the same mobian build on the SD as on the emmc it would boot up either drive randomly.
 If you have an SD that boots, you can boot it. Then browse the emmc where you should be able to access your user's home directory. If you have the convergence dock then it's easy to plug in a thumbdrive to save your files.
02-16-2021, 01:34 PM
I didn't know about the convergence dock until just now, but I'll check it out. I ended up just booting from sd, backing up my files and reinstalling. Moving forward, I'm going to make sure I don't have the sid repo enabled and hope that this doesn't happen again.
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